PRO2A Left Hand 16" 5.56 NATO 1/7 NR Side Charging M-LOK Upper
PRO2A LEFT HAND 16" 5.56 NATO 1/7 NR Side Charging Melonite M-LOK AR-15 Upper
Product Overview
The PRO2A LEFT HAND 16" 5.56 NATO 1/7 NR Side Charging Melonite M-LOK AR-15 Upper brings maximum ergonomic engineering and ballistic velocity to southpaw shooters looking for a premium full-length rifle setup. Moving away from standard rear-charging platforms, this complete upper assembly utilizes a fluid, Non-Reciprocating (NR) left side-charging handle interface. True left-side ejection geometry ensures that high-pressure carbon blowback and spent brass casings are thrown safely clear of your vision. Built with a full 16-inch match-grade barrel and configured with a smooth-cycling mid-length or carbine gas architecture, this assembly delivers peak downrange performance, long-range accuracy, and absolute reliability.
Key Features
True Left-Hand Architecture: Mirrored left-ejecting receiver profile paired with a matched left-hand bolt carrier group routes blinding carbon blowback and blistering spent shells safely clear of left-dominant eyes.
Non-Reciprocating Side Charging: Fluid manual control handle remains completely stationary while the action cycles, giving you absolute structural clearance for optics without moving parts near your support hand.
Full 16-Inch Velocity Barrel: Premium 16-inch profile allows maximum powder burn for the 5.56 NATO round, ensuring flatter trajectories, maximized downrange terminal energy, and optimal accuracy.
Fast 1/7 Twist Rifling: Precision-rifled profile engineered to provide exceptional rotational stabilization for heavy grain tactical and mil-spec projectiles (62gr, 69gr, and 77gr).
QPQ Melonite Hardened Finish: High-grade Salt Bath Nitride finish protects the bore and external steel barrel surfaces against high humidity, intense friction, and rapid thermal gas scoring.
Free-Float Slim M-LOK Handguard: Enhances intrinsic accuracy by isolating barrel harmonics, providing an expansive top Picatinny rail and clear M-LOK attachment slots for tactical gear.
Technical Specifications
Receiver Orientation:
True Left-Handed / Left Ejection Port Architecture
5.56 NATO (Fully Compatible with .223 Remington rounds)
Barrel :
Choice of Barrel: Carbine Length M4 Profile, Mid Length Govt Profile or Carbine Length CHF (Cold Hammer Forged) M4 Profile - all of them are 16 inch, 5.56 NATO Caliber, 4150 Chrome Moly Vanadium Steel, 1:7 Twist, Nitride/Melonite Treated
Twist Rate:
1:7 Twist Ratio
Barrel Coating Finish:
QPQ Melonite / Black Nitride Corrosion-Resistant Exterior and Interior Lining
Gas System Profile:
Mid-Length or Carbine Gas System with 0.750" Low Profile Gas Block Set
Muzzle Device:
Standard 1/2-28 A2 Flash Hider
Upper Receiver Type:
Gibbz Arms G4 Left Handed Billet Aluminum Side-Charging Receiver, Gen 2 Handle (Type III Hardcoat Anodized)
Handguard Profile:
15 Inch Slim Free-Float Modular M-LOK Rail Layout with Continuous Top Picatinny Rail System
Manufacturing Origin:
100% Proudly Made in the USA
Why Choose This Upper?
Traditional right-handed rifles compromise a southpaw operator's comfort by spraying hot gas, raw particulate, and spent shells directly across their line of sight. The PRO2A Left Hand 16" Side Charging Upper eliminates these operational hurdles completely. By modifying the manual control mechanism to a fluid, stationary left-side handle, you can charge your action naturally while remaining tightly locked behind your primary optic. Backed by heavy-duty 4150 steel construction, a high-durability Melonite barrel lining, and a full-length velocity footprint, this upper receiver assembly delivers clean, reliable, and uncompromised tactical performance straight out of the box.
